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Katyanochek1 [597]
3 years ago
10

The water level at Lake Penny changed −1 1/10 in. this year. Next year, it is predicted to change another −1 2/5

Mathematics
1 answer:
frutty [35]3 years ago
7 0
- 1 1/10 + (-1 2/5)

- 1 1/10 + (-1 4/5)

-2 5/10

-2 1/2
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A company produces two types of solar panels per year: x thousand of type A and y thousand of type B. The revenue and cost equat
jolli1 [7]

Answer:

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Step-by-step explanation:

We assume your equations are intended to be ...

C(x,y)=x^2-2xy+9y^2+3x-87y-6\\R(x,y)=5x+7y

Then the profit equation is ...

P(x,y)=R(x,y)-C(x,y)=5x+7y-x^2+2xy-9y^2-3x+87y+6\\=-x^2+2xy-9y^2+2x+94y+6

The partial derivatives of profit with respect to x and y are zero when profit is maximized.

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  ∂P/∂y = 0 = 2x -18y +94

Simplifying, these equations are ...

  • y = x -1
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Substituting the first into the second gives ...

  x -9(x -1) = -47

  -8x = -56

  x = 7

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The company will maximize profit by selling 7000 panels of type A and 6000 panels of type B.

5 0
3 years ago
The earth completes one rotation about its axis every 24 hours show me this rate
liberstina [14]
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Step-by-step explanation:

8 0
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LiRa [457]

Answer

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Step-by-step explanation:

Given,

2.2x+y=4

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2x+y=4..... equation i

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2x+y=4

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_ _ +

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o+ 5y = 10

y =10÷5

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y valu put the eq 1

2x+y=4

2x+2=4

2x=4_2

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3.

sol

3x+5y=4..... eq 1

x+3y=4 ..... eq 2

eq 2 multiple eq 1. 3

3x+5y=4

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0x+4y=8

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3 years ago
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Using the graph below, what is the unit rate?
Shtirlitz [24]

Answer:

10 dollars an hour

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For every 4 hours, the employee makes 40 dollars (10 dollars an hour).

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